35 resultados para Volunteers in Service to America
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United States,13th Congress, 2d session, 1813-1814. House. Doc. no. 35.
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Adam Seybet, Chairman.
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Pyruvate dehydrogenase (PDH) plays an important role in regulating carbohydrate oxidation in skeletal muscle. PD H is deactivated by a set of PD H kinases (PD K 1-4) with PDK2 and 4 being the predominant isoforms in skeletal muscle. PDK2 is highly sensitive to pyruvate inhibition, and is the most abundant isoform, while PDKI and 4 protein content are normally lower. This study examined the PDK isoform content and PDHa activation in muscle at rest and 10 and 40 Hz stimulation from PDK2 knockout (PDK2KO) mice to delineate the role of PDK2 in activating the PDH complex during low and moderate intensity muscle contraction. PDHa activity was lower in PDK2KO mice during contraction while total PDK actitvity was -4 fold lower. PDK4 protein was not different, however PDKI partially compensated for the lack of PDK2 and was -56% higher than WT. PDKI is a very potent inhibitor of the PDH complex due to its phosphorylation site specificity and allosteric regulation. These results suggest that the site specificity and allosteric regulatory properties of the individual PDK isoforms are more important than total PDK activity in determining transformation of the complex and PDHa activity during acute muscle contraction.
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April 13, 1824. Printed by order of the Senate of the United States. At head of title: 18th congress, 1st session. [64]. Printed by Cales and Seaton
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Full Title: 47. Message from the President of the United States, transmitting a report of the Secretary of State, in obedience to a resolution of the thirteenth inst. "requesting the President to lay before this House such documents relative to the Russian mediation as in his opinion it may not be improper to communicate." United States,13th Congress, 2d session, 1813-1814. House. Doc. no. 35. January 18, 1814. Ordered to lie on the table. One letter in French with English translation Printed by Roger C. Weightman
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Printed by Roger C. Weightman
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Printed at the Repertory Office
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This is a mixed methodology study that uses an autoethnographic approach to combine both an autobiography and a survey of practitioners who work in children’s mental health. It is largely about the implementation of Evidence-Based Practice (EBP), and the questions, concerns, experiences that I have had, and compared them with those of my fellow practitioners. In addition, it is about my journey as a mental health professional, and how I have come to recognize that in order to achieve the goals I wanted to achieve, I needed to return to university to pursue a Master’s degree. Within the research, I identify and discuss different definitions of EBP and identify several themes. I deconstruct the implementation of EBPs through the lens of Foucault and his notions of governmentality. I offer policy and practice recommendations to improve the implementation of EBP and the services received by children facing mental health issues.
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It is unclear how the principles of meaningful consequences, fair and proportionate accountability, and rehabilitation and reintegration under the Youth Criminal Justice Act (2003) are understood and experienced by youth participating in diversion from youth court. Interviews with 20 youth revealed that, from their understanding, extrajudicial sanctions were viewed as accomplishing the goals of meaningful consequences and fair and proportionate accountability relatively well, but less emphasis was placed on rehabilitation and reintegration. The findings suggest that there may be a need an examination of the spectrum of responses available to youth under the umbrella of Extrajudicial Sanctions and their ability to achieve the key principles of the legislation. Implications for both youth and policy are addressed.
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Pyruvate dehydrogenase phosphatase (PDP) regulates carbohydrate oxidation through the pyruvate dehydrogenase (PDH) complex. PDP activates PDH, enabling increased carbohydrate flux towards oxidative energy production. In culture myoblasts, both PDP1 and PDP2 undergo covalent activation in response to insulin–stimulation by protein kinase C delta (PKCδ). Our objective was to examine the effect of insulin on PDP phosphorylation and PDH activation in skeletal muscle. Intact rat extensor digitorum longus muscles were incubated (oxygenated at 25°C, 1g of tension) for 30min in basal or insulin–stimulated (10 mU/mL) media. PDH activity increased 58% following stimulation, (p=0.057, n=11). Serine phosphorylation of PDP1 (p=0.047) and PDP2 (p=0.006) increased by 29% and 48%, respectively (n=8), and mitochondrial PKCδ protein content was enriched by 45% in response to stimulation (p=0.0009, n=8). These data suggest that the insulin–stimulated increase in PDH activity in whole tissue is mediated through mitochondrial migration of PKCδ and subsequent PDP phosphorylation.
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A low-impact, high-intensity interval exercise (HIE) bout was used to determine whether an association exists between cytokines and bone turnover markers following an acute bout of exercise. Twenty-three recreationally active males (21.8±2.4yr) performed a single HIE bout on a cycle ergometer at 90% relative intensity. Venous blood samples were collected prior to exercise, 5-minutes, 1-hour, and 24-hours post-exercise, and were analyzed for serum levels of pro-inflammatory (IL-6, IL-1α, IL-1β, and TNF-α) and anti- inflammatory cytokines (IL-10) and markers of bone formation (BAP, OPG) and resorption (NTX, RANKL). Significant effects were observed with all bone markers, especially 5-minutes post-exercise with BAP, OPG, and RANKL increasing from baseline (p<0.05). Significant effects were also observed for IL-1α, IL-1β, IL-6, and TNF-α (p<0.00, p=0.04, p=0.03, p<0.00). In addition, post-exercise changes in NTX, BAP, and OPG were significantly correlated pro- and anti-inflammatory cytokines, suggesting that an interaction exists between the immune and skeletal response to exercise.
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There is a paucity of studies comparing social buffering in adolescents and adults, despite their marked differences in social behaviour. I investigated whether greater effects of social buffering on plasma corticosterone concentrations and expression of Zif268 in neural regions after an acute stressor would be found in adolescent compared with adult rats. Samples were obtained before and after one hour of isolation stress and after either one or three hours of recovery back in the colony with either a familiar or unfamiliar cage partner. Adolescent and adult rats did not differ in plasma concentrations of corticosterone at any time point. Corticosterone concentrations were higher after one hour isolation than at baseline (p < 0.001), and rats with a familiar partner during the recovery phase had lower corticosterone concentrations than did rats with an unfamiliar partner (p = 0.02). Zif268 immunoreactive cell counts were higher in the arcuate nucleus in both age groups after isolation (p = 0.007) and higher in the paraventricular nucleus of adolescents compared with adults during the recovery phase irrespective of partner familiarity. There was a significant decrease in immunoreactive cell counts after one hour isolation compared to baseline in the basolateral amygdala, central nucleus of the amygdala, and in the pyramidal layer of the hippocampus (all p < 0.05). An effect of partner familiarity on Zif268 immunoreactive cell counts was found in the granule layer of the dentate gyrus irrespective of age (higher in those with a familiar partner, p = 0.03) and in the medial prefrontal cortex in adolescents (higher with an unfamiliar partner, p = 0.02). Overall, the acute stress and partner familiarity produced a similar pattern of results in adolescents and adults, with both age groups sensitive to the social context.
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The current study examined whether overt and relational forms of reactive and proactive aggression were differentially related to adolescents’ temperament and attachment security. Measures of adolescents’ temperament, attachment security, and aggression were completed by 211 adolescents, ages 10–14, and their caregivers. Attachment security was consistently associated with all four dimensions of aggression, whereas proneness to frustration was found to be uniquely associated with reactive-overt aggression. Additionally, it was found that at lower levels of effortful control more secure attachment was related to lower levels of reactive-relational aggression. Results also indicated that, for girls, the relation between attachment and proactive-overt and proactive-relational aggression was only significant when effortful control was low. Conversely, for boys, the relation between attachment and proactive-overt aggression and proactive-relational aggression was significant when effortful control was high. Implications of these findings and limitations to the current study are discussed.